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Kosaka | lead smelting
 lead smelting
met. 炼铅; 铅熔炼
| process
 process
gen. 过 程; 工 序
archit. 流程; 工艺规程
hydroel.st. 过程; 进程; 步骤; 程序

to phrases
Kosaka lead smelting process
: 2 phrases in 1 subject
Metallurgy2